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Negative values on the Southern Oscillation Index indicate
Standard Deviation
A statistic that quantifies the amount of variation or dispersion of a set of data values, typically used to measure how spread out the numbers in a data set are.
Slope
A measure of the steepness, incline, or grade of a line, indicating the ratio of the vertical change to the horizontal change between two points on the line.
90th Percentile
A value below which 90% of the data points in a dataset fall.
Yearly Donations
The total sum of money given by donors to an organization within a year.
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